Baltimore Weather in September

September in Baltimore averages 18°C (64°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 88 mm (3.5 in) on average. An umbrella is a good idea.

Rainfall in Baltimore in September

Looking at the last 30 years, the data shows about 19 days with rain, averaging 88 mm (3.5 in) for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in Baltimore in September

September in Baltimore brings moderate temperatures, with highs of 18°C (64°F) and nights around 12°C (54°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Baltimore in September

The area enjoys a moderate level of sunlight, with around 128 hours. It's a good balance between sunny and cloudy days.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Baltimore.